The theme of the fourth annual O+ Festival – a three-day extravaganza of music, art and wellness in Uptown Kingston, in which artists and performers receive free health care in exchange for their participation – is scale, as in “scaled up.” Not only does the Festival feature more artists than ever – 40 in total, working in the media of paint, sculpture, dance, performance art and video, in addition to dozens of musicians – and a new wellness center, but some of the pieces, such as the mural by internationally famous street artist Gaia, is literally gigantic. Wielding a spray-paint can and perched on a hydraulic lift dozens of feet above the street, the artist has been painting the monumental image of the Ephesian Artemis, the ancient fertility goddess with multiple breasts and outstretched arms, on the rear brick wall of BSP.